style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-image: url('purple-aesthetic-rain.gif');
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.calculator {
    
    width: 320px;
    padding: 20px;
    background-color: #2a0a51;
    color: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}

#display {
    width: 100%;
    height: 60px;
    font-size: 24px;
    padding: 10px;
    border: none;
    text-align: right;
    margin-bottom: 20px;
    border-radius: 5px;
    background-color: #f0f0f0;
}

.buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 10px;
}

button {
    width: 100%;
    height: 60px;
    font-size: 24px;
    background-color: #ffffff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
    padding: 10px; /* Menambah padding untuk semua tombol */
}

button:hover {
    background-color: #f2ff00;
}

button.zero {
    grid-column: span 2; /* Membuat tombol 0 selebar 2 kolom */
}

button.equal {
    grid-column: span 2; /* Membuat tombol = selebar 2 kolom */
    height: 130px; /* Memperpanjang tombol = */
}

button:active {
    background-color: #4000ff;
}